243 ballistic chart

Produces a ballistic trajectory chart and table that shows the drop, velocity, kinetic energy, windage, and trajectory of a bullet. SHOOTERSCALCULATOR.COM. ... 243 Win 87 gr V-MAX. Drag Function: G1 Ballistic Coefficient: 0.40 Bullet Weight: 87 gr …

6mm ARC Ballistics. A look at what exactly Hornady’s 6mm ARC is all about including ballistic information for the few commercially available loads out there in this young caliber. Ballistic chart data including ballistic charts with muzzle velocity, energy and bullet drop data for the largest calibers among American shooters.Ballistics Charts & Data. 15% off $150+ Order with Code SG4870. Use coupon code SG4870 at checkout to receive 15% off your entire purchase of $150+; excluding Buyer's Club Membership fees, Ammo, Firearms, Trolling Motors, Electronics, Night Vision Optics, Generators, Doorbusters and Bullseye deal items. $50 maximum coupon value.243 Winchester ~ 100 Grain ~ Trajectory Chart. Selected bullet. 243 Winchester #A1561–02. Coefficients G1. 0.4130 : 0.4180 : 0.3930 : Velocity Boundaries.Trajectory. Calculate a trajectory from bullet, velocity, firearm and atmospheric parameters. Explanation of terms. Library (Select bullet or enter BC and Weight below.) [?]Typically, ballistics charts would list 100-, 200- and 300-yard MRTs. As an example, the MRT for the 150-grain 7mm Remington Mag load as listed in the 1964 Remington catalog was .5 inch at 100 yards, 1.8 inches at 200 yards and 4.7 inches at 300 yards. ... (.284) that would be very light indeed, but it would be quite heavy in 6mm (.243 ...Load Data. Explore the world of Nosler, renowned for crafting the finest bullets, ammunition, rifles, and brass. Discover our extensive lineup, including Partition, AccuBond, E-Tip, Ballistic Tip, Custom Competition, and more. Experience superior quality and performance with Nosler products.Learn about the ballistic characteristics of 243 Winchester, a lightweight and accurate deer and hog hunting round. See the ballistic charts and data for different 243 Winchester ammo loads, such as Winchester, Prvi Partizan, Hornady, Federal and more.

This user-friendly calculator will compute your drops accurately, and output a handy "Cheat Sheet" you can print and attach to your rifle. Here's how it works. From the Ballistics Calculator Page, first select 4DOF or Standard. Then simply input G1 or G7 BC values, muzzle velocity, bullet weight, zero range, and a few other variables.The following is a 500 yard 7mm Rem Magnum ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 500 yd mark. It charts everything; drop, time, energy, velocity, range, and does so in 50 yard steps that are easy to understand.Average Gr: 150. Recoil: 2.31. Power Rank: 4.86 of 20. The 7mm Shooting Times Westerner (STW) was designed in 1979 by Layne Simpson as a wildcat cartridge and produced for the commercial market starting in 1989. The 7mm STW is based off the parent case 8mm Remington Magnum with a narrowed neck to fit a .284 inch bullet on a .315 inch neck.G1 Ballistic Coefficient Must be between 0.001 and 1.0. Firearm Setup. Sight Height (in) Must be a number greater than 0. Zero Range (yd) Must be a number greater than 0. Environmental Status. Temperature (°F) Maximum 140°F; Minimum -40°F. Maximum 60°C; Minimum -40°C. Wind Speed (mph)Article Posted: July 10, 2012. The following is a 1000 yard .308 ballistic chart that was created using our free online ballistic calculator and details all aspects of the bullets trajectory from the millisecond it leaves the barrel until the time it reaches the 1,000 yd mark. It details drop, time, energy, velocity, range, and does so in 50 ...North Korea launched a ballistic missile, which reportedly placed a satellite into orbit. The Dec. 12 launch contravened United Nations resolutions forbidding Pyongyang to develop ...1. Roysclockgun, I load the .243 with 95 grain Nosler Ballistic Tips for two rifles, circa '72 tang M-77 and a 1500 Howa. Both rifles will consistently shoot 1/4 inch three shot groups. Both have top quality Leupold scopes. With the usual disclaimer try working up to: Nosler brass. 95 grain Nosler Ballistic Tip.

Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet.Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet.May 3, 2011 ... You would need to pack some sort of powder into a 243 case to get a 100gr bullet to go quick enough to only drop 2inchs at 100yds surely..223 Rem. Ballistics vs. .243 Win. Ballistics Ballistically speaking, these calibers would be cousins rather than brothers. The .243 Win. is a necked-down .308 Win., so it holds nearly twice as much powder as the .223 Rem. Added powder increases velocity and energy, which translates to what the Internet calls "knock-down power" (more on ...

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Ballistic Silvertip ammunition provides hunters proven explosive impact and extreme precision. Innovation combined with engineering excellence makes Ballistic Silvertip the choice for those who appreciate the legendary excellence Winchester is known for around the world. Usage: Brand: Ballistic Silvertip. Rounds per box: 20. Rounds per case: 200..243 Winchester - Published Manufacturer Loading Data Shellholders: Hornady #1The 26 Nosler is a non-belted, 6.5mm (.264 caliber) centerfire rifle cartridge. The 26 Nosler is capable of firing a 129gr AccuBond®-LR bullet at a Muzzle Velocity of 3400 fps. Designed with a maximum C.O.A.L. of 3.340", the 26 Nosler cartridge functions in a standard (30-06 Spfd.) length action. With a useable case capacity of 93 grains of ...Ultra-high velocity, magnum ammunition is how Roy Weatherby got started in the 1940s. As a young wildcatter, he revolutionized the industry with his fast, hard-hitting loads that were dead-on accurate. Today, those same performance qualities are every bit a part of Weatherby cartridges. Weatherby's move to Wyoming is an exciting step towards the continual opportunityComplete 7mm-08 Remington ammunition ballistics Chart. Compare all 7mm-08 Remington ammunition manufacturers on one easy to read chart. ... 243 Winchester 270 ...Mar 11, 2019 · Remington, .243 Winchester Premier Core-Lokt Ultra Bonded ammunition features a bullet in a class of its own. Developed and designed by Remington’s industry-leading R&D; staff. Core-Lokt Ultra Bonded offers hunters the unique combination of excellent accuracy, superb weight retention and expansion with overall superior terminal results.

This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet. By adding trajectories to the panel on the right you may produce charts and graphs that show the different trajectories side by side.Well, that would limit most hunting rifles to between 150 and 400-yards. But wait, there’s more. Depending on bullet type and construction, the minimum expansion velocity for rifles falls between about 1300 and 2000 fps. If you want to max things out, you need a bullet that will expand at lower velocities.The following ammunition cartridge ballistics information and chart can be used to approximately compare .243 Winchester vs .270 WSM Winchester Short Magnum ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, or jacketing ...The 6.5 Grendel and the 5.56 NATO are essentially the same length, minus a few millimeters (5.56X45 VS 6.5X39), but the Grendel has extra energy leftover at 300 yards to keep stopping deer sized animals in their tracks with well placed shots. The 6.5 Grendel traces its roots back to the first few years of this century, with a parent case being ...Learn about the drop, velocity, energy, and time of a common .243 round the Winchester Ballistic Silvertip, 95gr at different ranges and distances. This chart does not account for atmospheric conditions and shows the ballistic coefficient of 0.40 for this bullet.The best zero distance for a .243 Winchester is 25 yards. At 25 yards, a 100 grain, 2960 fps, .243 bullet will have a maximum point blank range of 296 yards and hit roughly 3″ high (2.7″) at 100 yards. This 25 yard zero will allow you to aim dead on target all the way out to 300 yards.The .243 Winchester cartridge is a centerfire rifle cartridge that was introduced in 1955 by Winchester. It has a bullet diameter of .243 inches, a case length of 2.045 inches, and an overall length of 2.710 inches. The cartridge capacity is 53.5 grains of water, and it has a recommended twist rate of 1 in 10 inches.Typically, ballistics charts would list 100-, 200- and 300-yard MRTs. As an example, the MRT for the 150-grain 7mm Remington Mag load as listed in the 1964 Remington catalog was .5 inch at 100 yards, 1.8 inches at 200 yards and 4.7 inches at 300 yards. ... (.284) that would be very light indeed, but it would be quite heavy in 6mm (.243 ...The 243 Winchester is, on average, a flatter shooting projectile. At 500 yards, it drops almost ten inches less than the 308. This can vary on bullet weight and powder loading, but it's undoubtedly a flat shooting round. The drop is minimal, and it tends to drop less than 308 Winchester.

Mar 11, 2019 · Remington, .243 Winchester Premier Core-Lokt Ultra Bonded ammunition features a bullet in a class of its own. Developed and designed by Remington’s industry-leading R&D; staff. Core-Lokt Ultra Bonded offers hunters the unique combination of excellent accuracy, superb weight retention and expansion with overall superior terminal results.

Magnum 30 1.94 Speer TNT HP 2200 1777 1419 322 210 134 1.3 6.0 -1.3. FEDERAL PREMIUM® RIMFIRE. FEDERAL SHELL LENGTH SLUG WEIGHT VELOCITY IN FEET PER SECOND (TO NEAREST 10 FPS) ENERGY IN FOOT-POUNDS (TO NEAREST FOOT-POUND) HEIGHT OF SLUG TRAJECTORY IN INCHES ABOVE OR BELOW …Winchester Varmint 243 Winchester Ammo 55 Grain Winchester Ballistic Silvertip Polymer Tip. Product Family #: 2900372271. ( 6) Write a Review Q&A (1) Videos (1) Our Price: $51.99 - $509.99.24. 24. SPECIFICATIONS ARE NOMINAL BALLISTICS FIGURES ESTABLISHED IN TEST BARRELS. INDIVIDUAL FIREARM MAY VARY FROM TEST BARREL RESULTS . 0.0 INDICATES YARDAGE AT WHICH FIREARM WAS SIGHTED IN. * TEST BARREL LENGTH IN INCHES. †† WARNING: FULL PRESSURE LOAD. NOT FOR USE IN ALL 45-70 RIFLES. INJURY OR DEATH MAY RESULT FROM USE IN FIREARMS NOT ...243 Win 58 gr V-MAX® Superformance®. Superformance ® Varmint ammunition delivers muzzle velocity increases of 100 to 200 feet per second from EVERY gun. Accuracy, increased range, flatter trajectory, less wind drift and devastating terminal results are all realized with Superformance ® Varmint ammunition. Find a Retailer.Let’s take a look at the ammunition cartridges and compare some specific stats, approximate ballistics, and what they are best used for. Truth be told, both the .22-250 Remington and the .243 Winchester are some of the best varmint and small game calibers, and there are multiple reasons why this “battle of the jackets” is polarizing …Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet.Ballistic charts for hunting rifles detail the velocity, trajectory, bullet weight and other specifications for the caliber and model of each hunting rifle. Use a ballistic charts ...

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The .243 Winchester (6×52mm) is a popular sporting rifle cartridge. Developed as a versatile short action cartridge to hunt both medium game and small game alike, it "took whitetail hunting by storm" when introduced in 1955, and remains one of the most popular whitetail deer cartridges. It is also commonly used for harvesting blacktail deer, pronghorns and mule deer with heavier rounds, and ...Winchester Ballistics Calculator. Compare ballistics data on your favorite Winchester Ammunition rounds. Input your hunting conditions to see the drop, drift, bullet trajectory, velocity, and energy in easy-to-read ballistics charts and graphs.The stats are generated using a .22-250 Remington, Remington AccuTip, 50gr with a ballistic coefficient of 0.242 being fired at a velocity of 3799 from muzzle point blank, this also takes into account the standard 1.5" scope height, and a gun that has been sighted in at 100 yards.The Nosler Ballistic Calculator is a digital tool designed to forecast the trajectory of bullets, factoring in environmental variables like wind, temperature, and altitude. Primarily used by long-range shooters and hunters, it belongs to the category of shooting ballistics calculators. Detailed explanations of the calculator’s workingNote: The chart above is an example of one 22 Creedmoor load, and actual ballistic performance may vary depending on bullet weight, lot, barrel length, and environmental conditions while shooting. Thanks to a high SAAMI max pressure of 62,000 psi, according to Peterson Cartridge , and the solid ballistic coefficients (.467/.235) of 22 Creedmoor ...Power-Shok Rifle 243 Win 100 Grain. Part # 243B. Grain Weight: 100. Muzzle Velocity: 2960. 4.1 (14) $36.99. Available. Add to Cart. WARNING for California Residents.The most innovative lead-free hunting ammunition. Sako has developed the new lead-free BLADE bullet to meet the needs of the most demanding lead-free hunters. One of the challenges in development of the bullet with alternative materials has been the inadequate performance in either situations: not expanding for small game/long range impacts or ...Jul 25, 2011. #3. Depends on what round you're firing. The trajectory of a 55gr .243 round at 4000 odd fps is very different to a 100gr at 3000 fps. For the heavier rounds, I'd zero, as jc says, 1" high at 100 yards. This should give you a 4" point blank range from the muzzle out to nearly 200 yards. If you want to work it our properly, invest ... ….

Ammo Description Velocity (m/sec) Energy (joules) Trajectory Tables (cm) GEE GEE Trajectory CARTRIDGE BULLET ITEM # B.C. 0m 50m 100m 150m200m 250m 300m 0m 50m 100m 150m200m 250m 300m 0m 50m 100m 150m200m 250m 300m 0m 50m 100m 150m200m 250m 300mNov 4, 2009 ... The rifle model won't affect ballistics. The barrel length will affect velocity which will affect trajectory. Is that what you're asking?Ballistics Charts & Data. 10% off with Code SG4192. Use coupon code SG4192 at checkout to receive 10% off your entire purchase; excluding Buyer's Club Membership fees, Ammo, Firearms, Trolling Motors, Electronics, Night Vision Optics, Generators, Doorbusters and Bullseye deal items. $50 maximum coupon value.The following ammunition cartridge ballistics information and chart can be used to approximately compare .243 Winchester vs .30-06 Springfield ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight,The .243 Winchester loads use a 90gr Ballistic Tip (.365 BC) and a 90gr ELD-X (.409 BC) while the 6.5 Creedmoor loads use a 140gr Ballistic Tip (.509 BC) and a 143gr ELD-X (.625 BC). ... The chart below compares how much a 10 mile per hour crosswind impacts those same .243 Winchester and 6.5 Creedmoor loads out to 500 yards.Staff Report February 28, 2023. 1 Reviews. Whether you're changing ammo or sighting in a new rifle, you've come to the right place for Hornady Ballistics information. View all Hornady Ballistics info below or click here to download the PDF. Visit Sportsman's Guide for a great selection of Hornady Ammo. Shop Hornady.Triple Defense. FTX. Slug & 2 round balls 2½" 86238. 750. 12 gauge shotgun ballistics are established with a 30” SAAMI standard test barrel. 20 gauge shotgun ballistics are established with a 26” SAAMI standard test barrel. Hornady Manufacturing Company trademarks include: 366 AP. Accurate, Deadly, Dependable.The rim diameter of the 6mm ARC is 0.441 inches, while the 243 is slightly larger at 0.471 inches. The 243 has a case length of 2.045" compared to the 1.49" of the 6mm cartridges. This increased size means the 243 has a case capacity of 53-54.8 gr H2O. The overall length of the 6mm ARC is 2.26 inches which is almost half an inch shorter than ... 243 ballistic chart, 243 vs 223 Ballistics. ... The chart below compares how much a 10 mile per hour crosswind impacts those same 223 Remington and 243 Winchester loads out to 500 yards. This is another area where the 243 Winchester shines and the cartridge has a significant advantage over the 223 Remington at all ranges in terms of wind drift. This is because the ..., 6mm .243 58 gr V-MAX® Item #22411 | 100/Box . With its combination of proven materials, innovative design and streamlined profile, the Hornady ® V-MAX ® represents the pinnacle of what a specialized varmint bullet can achieve, offering straight-line trajectories, enhanced accuracy, dramatic expansion and explosive fragmentation at a wide range of distances and velocities., Jun 24, 2018 · Ballistics. The science of projectiles and firearms, or in other words, the info you need to make the kill! If you are looking for the 270 vs 308 vs 30 06 ballistics chart, the 5.56 trajectory chart, the 300 Win Mag Ballistics data, or the 30 06 trajectory chart; you are in the right place! Here are a few suggestions for using the below dashboard: , The .204 Ruger is the second largest casing in its class behind the 5.6x50 Magnum. The ballistic performance based off the 32 V-Max, 40 , 45 grain are 4,225 ft/s (32 gr), 3,900 ft/s (40 gr), and 3,625 ft/s (45 gr). The .204 Ruger is considered to be accurate on distances up to 270 yards. This makes it a good choice for varmint hunting such as ..., The 350 legend has a muzzle velocity of 2,350 feet per second with a 180gr bullet, while the. 243 winchester has a muzzle velocity of 3,060 feet per second with a 100gr bullet. The. 243 winchester round is faster and more accurate at longer ranges, while the 350 legend round is perfect for hunting smaller game at shorter ranges., First, the 243 Winchester uses larger diameter bullets than the 223 Remington. Specifically, the larger diameter .243″ bullets used by the cartridge have about 18% more frontal surface area (also known as cross sectional area) than the .224″ bullets used by the 223 Remington (.0464 vs .0394 square inches)., Ballistic Silvertip ammunition provides hunters proven explosive impact and extreme precision. Innovation combined with engineering excellence makes Ballistic Silvertip the choice for those who appreciate the legendary excellence Winchester is known for around the world. Usage: Brand: Ballistic Silvertip. Rounds per box: 20. Rounds per case: 200., Aug 22, 2011. #7. Given the choice between 243 and 22-250...definitely 243. Get a rifle with sufficient twist to shoot the heavier bullets (105+ grains) and you will have a rig that can shoot targets and varmints as far as you can see. It will also kill deer at considerable distance. Ordered list. Unordered list., Complete .243 Winchester ammunition ballistics Chart. Compare all .243 …, Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet., Energy lists kinetic energy remaining in the bullet at each distance. Trajectory shows where the bullet should strike at the various ranges. Note the -1.5 inches at the muzzle. This reflects the average distance of the scope reticle above the bore. With some large-objective scopes, this could be -1.75 or -2 inches., Page 1., 223 vs 243 Trajectory. Overall, the 243 Winchester is a flatter shooting cartridge than the .223 Remington is. At 200 yards, our charts show that the 243 is still positive about one inch, whereas the .223 has dropped about an inch. Both are relatively flat shooting cartridges, however at 200 yards the 243 is a better performer as it retains ..., Use this ballistic calculator in order to calculate the flight path of a bullet given the shooting parameters that meet your conditions. This calculator will produce a ballistic trajectory chart that shows the bullet drop, bullet energy, windage, and velocity. It will a produce a line graph showing the bullet drop and flight path of the bullet., 243 necked down to .224 with no other change and is designated as the .22-243 Winchester. The second version was created by Paul Middlestead of California and ..., Ballistics Calculator. Bullet Library. Select a bullet from the list or enter in the properties below. Bullet Properties. Diameter. inches. Weight. grains. BC., 243 Win - 70 grain Version 9.0 24" Lilja BARREL Twist 1-10" GRS. POWDER CHG. M AX IU S O .C L 92% 87% ** = Compressed load " Because Nosler, Inc. has no control over the actual components selected, the manner in which they are assembled or the ... Ballistic Tip® Varmint 96% 83% 79% 91% 87% 83% 0.310 Varmageddon® 0 .3 0 5., The flattest-shooting popular rifle cartridge at 1,000 yards is the 6.5-300 Weatherby Magnum, followed by the .26 Nosler, the .28 Nosler, the .22 Creedmoor, and the 6.5 Weatherby RPM. These cartridges all drop less than 255″ at 1,000 yards. The following table averages multiple loads for each cartridge and shows an average amount of drop at ..., The wildcat was well suited to the short action, utilized heavier and deeper penetrating projectiles than the .243 but with a similar flat trajectory along with mild recoil. In 1996, Arthur B Alphin, director of A-Square Cartridges (USA) applied to have the 6.5-08 wildcat standardized by SAAMI as the 6.5-08 A-Square. A-Square was a member of ..., Rifle Data. Rifle Data. Here you will find load data for some of the most recent cartridges on the market, with more being added each week. We are currently populating the cartridge drop-down menu with updated cartridge renderings, new propellants and bullets, and links to complimentary product pages. Cartridge., 223 trajectory chart 100 yard zeroTrajectory ballistic rem Ballistic trajectory rem223 bullet cartridge remington rem bullets velocities ai chart bolt action caliber reloading load max sierra manual guide accurateshooter varmint. 223 bullet trajectory chart223/243 trajectory photo by mbarry201 Shooterscalculator.com.223 ballistics chart ..., Hornady. This 5.56 ballistic chart shows 68 grain Hornady BTHP Match Frontier rounds fired from a 20 inch barrel. The below ballistics chart for 5.56 NATO Shows 55 grain Hornady M193 rounds fired from a 20 inch barrel. This 5.56X45MM ballistics chart shows 62 grain Hornady FMJ Black rounds fired from a 20 inch barrel., The following ammunition cartridge ballistics information and chart can be used to approximately compare .243 Winchester vs .30-30 Winchester ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, or jacketing type. As such ..., Plus, when ammo shortages abound, the 223 is more likely to be in-stock. Allowing you to keep shooting and hunting while other guys wait for ammo stock to return to the shops. 22 250 vs 243. As for the 243, it carries more power than both the 22 250 and 223, and it does so at a greater distance., 6mm ARC Ballistics. A look at what exactly Hornady’s 6mm ARC is all about including ballistic information for the few commercially available loads out there in this young caliber. Ballistic chart data including ballistic charts with muzzle velocity, energy and bullet drop data for the largest calibers among American shooters., Product Overview. Fusion® was the first rifle ammunition specifically built for deer hunting—and it's still the best, offering the largest expansion and highest weight retention in head-to-head comparisons against the competition. With a molecularly bonded jacket and a pressure-formed core, Fusion transfers maximum energy on target., 243 Winchester Web Data (1.21.2021) .xlsx Author: carterc1 Created Date: 1/21/2021 2:48:03 PM ..., Both RWS and Norma have good ballistic tables / calculators on their websites. Also look on the box of ammo - quaite a few, certainly RWS, carrying ballistic information. RWS give the following for their 100gn 243 load - range in m, trajectory in cm. MRD is most recomended distance - ie the distance to zero to thus giving the flattest trajectory., The .243 and the .270 also come with comparable costs. The cheapest .243 is about $1.20 per round, and the same goes for the .270. For a good box of 20 hunting cartridges, expect to pay $35 to $50 for either. Since cost and availability are a dead heat, the .243's low recoil gives it the edge in this category., Here is a ballistics chart of the 243 Winchester with a 100-grain soft point bullet: range (YD) drop (IN) wind drift (IN) velocity FPS: energy ft-lb: 0-1.5: 0: 2960: 1945: 50-0.2: 0.2: 2826: 1774: 100: 0: 0.9: ... If you are looking for the best ballistics, the 243 is the better cartridge. The 243 has more energy, less drop, less wind drift ..., The following ammunition cartridge ballistics information and chart can be used to approximately compare .22-250 Remington vs .243 Winchester ammo rounds. Please note, the following information reflects the estimated average ballistics for each caliber and does not pertain to a particular manufacturer, bullet weight, or jacketing type. As such ..., History. Introduced in 1955 the .243 Winchester is based on the 7.62x51 military (.308 Winchester) case necked down to .243” (6mm). The balance of light recoil and versatility as both a varmint and big game cartridge quickly led to the .243 being one of the most popular rifle chamberings in the world. , This tool allows you to compare rifle ammo sizes, power, speed, energy, and more. Click on the ammo / round / cartridge link and get full details on the round including history and usage all details hand written. See and generate your own ballistic drop chart and table that then charts the ammo step by step and even allow for wind resistance, angles, and atmospheric conditions.